2018 GMC Terrain problems

“On XXX while driving my 2018 GMC Terrain SLE 1.5L turbo on the highway at approximately 70 MPH near [XXX]. I experienced a sudden loss of power brake assist without any prior dashboard warning lights or messages. I was traveling with children to [XXX] for a youth wrestling tournament, approximately 5 hours from my residence. The brake pedal became extremely hard to press, requiring excessive force to slow the vehicle while traveling at highway speeds. I was transporting children at the time, creating a serious safety concern. Because I was away from home and needed to get the children to their scheduled wrestling weigh-ins, I arranged alternative transportation through Enterprise. I was unable to have my vehicle inspected by a GMC dealership until XXX, after returning home. At approximately 93,614 miles, Ed Martin Buick GMC diagnosed an internally failed, engine-driven brake vacuum pump. The service advisor confirmed in writing that the pump had come apart internally and explained that a seized pump can strip the exhaust camshaft gear. The dealership documented missing metal material from the vacuum pump and camshaft gear, raising concerns about metal debris…”

“Without any type of warning, I was driving down the road when my car started making a knocking/ticking type noise then my engine light came on. I attempted to hit my brakes and stop, and I had no control. There was no brakes without pushing it all the way to the floor it was very hard to get my car to stop. I managed to get off the road and into a parking lot and now told that I have $5000 worth of repairs, including the vacuum pump, camshaft timing and guides. After reading information I see there is complaints filed regarding this failed vacuum pump and I would just like to report this.”

“This car was my daily driver to work it's been serviced regularly and well maintained, in XXX I've had the car for 8 years and driving home from work on the [XXX] it started to Rev very high and I wasn't able to speed up past 55 so I got in the slow lane and the car was not shifting gears and the transmission light came on, I took it to a garage who said the error code was P0700 and I would need a whole new transmission which would cost 8k the trade in value for the 2018 GMC terrain is about that price, having a transmission fail after just 8 years is unacceptable, I've read there is a recall for the transmission in these cars in other states but not in [XXX] where I live”

“The infotainment system will just randomly start going haywire and when it happens, you cannot use the touchscreen. It will try to randomly delete app icons such as the camera, it will try to delete connected phones, it will try to delete radio favorites and it will move app icons all around. These are just a few examples of things that happen.”

“My car said to me this not that there is something wrong with the Service Safety Restraint system! It was fine last night when I got home! I just bought this car a month ago and everything was fine and now my air bag light is on and will not go off!”

“The contact owns a 2018 GMC Terrain. The contact stated that while driving 20 MPH, the brake pedal was firm and the "Service Brake Assist" message was displayed on the instrument panel. The contact used excessive force to depress the brake pedal while stopping the vehicle. The vehicle was driven to the destination and parked. The dealer was notified of the failure and informed the contact that the vehicle was not included in a vacuum pump recall. The vehicle was not diagnosed or repaired. The vehicle was scheduled for repair with an independent mechanic. The failure mileage was approximately 116,000.”